.pictures{width: 903px;height: 733px;border: 1px solid #eeeeee; margin-bottom: 20px;}
.pictures ul,.pictures li{padding: 0px;margin: 0px;}
.pictures ul{padding: 15px 25px;}
.pictures li{width: 405px;height: 363px;float: left;list-style-type: none;}

.pictures li:nth-child(odd){margin-right:36px;}
/*
.pictures li:nth-child(1),.pictures li:nth-child(2){margin-right:36px;}*/
.pictures li .pictures_title{font-size: 14px;color: #666;display: block;width: 450px;height: 45px;text-align: center;}